JP2004146170A - Connection structure of flat circuit unit and cabling material - Google Patents

Connection structure of flat circuit unit and cabling material Download PDF

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Publication number
JP2004146170A
JP2004146170A JP2002309108A JP2002309108A JP2004146170A JP 2004146170 A JP2004146170 A JP 2004146170A JP 2002309108 A JP2002309108 A JP 2002309108A JP 2002309108 A JP2002309108 A JP 2002309108A JP 2004146170 A JP2004146170 A JP 2004146170A
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JP
Japan
Prior art keywords
conductor
flat circuit
circuit body
connection structure
circuit unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2002309108A
Other languages
Japanese (ja)
Inventor
Mitsutaka Obara
小原 光貴
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Furukawa Electric Co Ltd
Original Assignee
Furukawa Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Furukawa Electric Co Ltd filed Critical Furukawa Electric Co Ltd
Priority to JP2002309108A priority Critical patent/JP2004146170A/en
Publication of JP2004146170A publication Critical patent/JP2004146170A/en
Pending legal-status Critical Current

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  • Multi-Conductor Connections (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection structure of a flat circuit unit and a cabling material wherein the cost is reduced and connections are reduced in size by reducing the number of connections and working man-hour. <P>SOLUTION: An exposed conductor 1a of a flat circuit unit 1 and an exposed conductor 3a of the cabling material 2 are piled up, and fastening parts 4 composed of conductive metal is made to straddle on the conductor 1a, and a pair of the tip parts 4a are stuck into a flexible insulating substrate 1c and made to be penetrated and bent in the mutually approaching direction so that the conductor 1a and the conductor 3a are fastened to be crimped, and the conductor 1a and the conductor 3a are electrically connected. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、フラット回路体と配線材の接続構造に関する。
【0002】
【従来の技術】
従来、フレキシブル・フラットケーブルやフレキシブル・プリントサーキットなどのフラット回路体とワイヤーハーネスなどの配線材との電気的接続は、フラット回路体の導体の接続部と配線材の端末に、接続端子やコネクタなどの接続部品を取り付け、これらの接続部品同士を電気的に接続することにより行っている。
また、配線材の端末に取り付けた接続端子をフラット回路体の導体に加締めて、配線材とフラット回路体とを電気的に接続する場合もある(例えば、特許文献1参照。)。
【0003】
【特許文献1】
特開2001−210411(段落(0013)〜(0021)、図1〜図5)
【0004】
【発明が解決しようとする課題】
上述のフラット回路体と配線材との電気的接続には、以下のよう問題があった。即ち、
1)フラット回路体と配線材のそれぞれに接続部品を取り付けて接続を行う場合には、2種類の接続部品を要し、また接続部品の取付工程も2工程になり、コストアップの要因となる。
また、接続部品として端子を収容するハウジングを備えた比較的大きなコネクタを使用すると、フラット回路体と配線材の電気的接続部は少なくともコネクタの容積を要し、大型化する。
2)配線材の端末に取り付けた接続端子をフラット回路体の導体に直接加締める場合でも、1種類の接続部品と配線材に接続端子を取り付ける工程を要し、コストの削減に限界がある。
【0005】
【課題を解決するための手段】
本発明は上記問題点を解決すべくなされたもので、請求項1記載の発明は、フラット回路体の導体と配線材の導体が加締め部品により加締められて圧接し、電気的に接続していることを特徴とするフラット回路体と配線材の接続構造である。
また、請求項2記載の発明は、請求項1記載の発明において、前記加締め部品が導電性金属からなることを特徴とするものである。
さらに、請求項3記載の発明は、請求項1または2記載の発明において、フラット回路体の導体と配線材の導体の圧接部に導電性接着剤を付着させたことを特徴とするものである。
【0006】
請求項1記載の発明によれば、一種類の加締め部品を用いてフラット回路体の導体と配線材の導体を圧接して電気的に接続することができ、また、前記加締め部品はフラット回路体の導体や配線材の導体に予め取り付けておく必要がない。したがって、接続部品数が最小限の一種類ですみ、また、接続部品をあらかじめ前記導体へ取り付ける取付工程が不要であるため、従来に比してコストが低減する。
また、加締め部品はコネクタなどの接続部品に比して小型にすることができるため、フラット回路体と配線材の電気的接続部は従来に比して小型化する。
【0007】
また、請求項2のように、前記加締め部品を導電性金属で構成すると、フラット回路体の導体と配線材の導体の電気的導通上好ましく、さらに、請求項3のように、フラット回路体の導体と配線材の導体の圧接部に導電性接着剤を付着させると、電気的導通上一層好ましい。
【0008】
【発明の実施の形態】
以下、図面に基づいて本発明の実施の形態を詳細に説明する。
図1(a)〜(d)はそれぞれ、本発明にかかるフラット回路体と配線材の接続構造の作製工程の説明図である。
【0009】
本実施形態は、図1(a)に示すように、フラット回路体であるフレキシブル・プリントサーキット(FPC)1と、配線材であるワイヤーハーネス2と、加締め部品4からなり、FPC1の導体1aとワイヤーハーネス2を構成する電線3の導体3aを加締め部品4で電気的に接続したものである。
加締め部品4は導電性金属の板材からなり、コの字状に折り曲げられて、対向する一対の先端部4aは幅が狭く、鋭利に尖っている。
【0010】
FPC1とワイヤーハーネス2の接続構造の作製工程は以下の通りである。即ち、
1)先ず、図1(a)に示すように、FPC1の絶縁被覆1bを部分的に剥がして、5本の導体1aの所要部(この場合は端部)を露出させる。また、ワイヤーハーネス2を構成する5本の電線3の端末部の導体3aを露出させる。
2)次いで、図1(b)に示すように、5本の電線3の露出した導体3aをそれぞれ、FPC1の露出した5本の導体1a上に重ねる。そうして、加締め部品4を重ねられた導体1a、3aの上に跨がらせて、図1(c)に示すように、一対の先端部4aをFPC1のフレキシブル絶縁基板1cに突き刺して貫通させ、相互に接近する方向に曲げて、導体1a、3aを加締める。この状態で、導体1a、3aは圧接し、電気的に接続する。
3)次いで、図1(d)に示すように、導体1a、3aの電気的接続部の両面に絶縁シート5を接着ないし溶着して被せ、電気的絶縁性を確保する。
【0011】
本実施形態が従来例と異なる特徴的なことは、電線3の導体3aとFPC1の導体1aを、一個の加締め部品4で加締めて圧接し、電気的に接続していることである。
【0012】
上述のように、本実施形態では、一個の加締め部品4で導体1aと導体3aを電気的に接続することができ、また、加締め部品4は予め導体1aおよび導体3aに接続しておく必要がない。したがって、最少数量の一個の部品で、また、最少工程数の1工程で導体1aと導体3aを電気的に接続することができるので、コストが低減する。
また、導体1aと導体3aは、コネクタに比して小型の加締め部品4で接続されてるため、電気的接続部の占めるスペースは従来に比して小さくなる。
【0013】
なお、上記実施形態において、加締め部品4を構成する金属板は、導電性がよいほど好ましい。
また、図2に示すように、FPC1の露出した導体1aの接続すべき部分の両側にあらかじめ穴1dを開けておき、加締め部品4の先端部4aを穴1dに通して加締めると、加締め部品4をFPC1に取り付け易くなる。
さらに、導体1aと導体3aの圧接部分に導電性接着剤を塗布などして付着しておくと、導体1aと導体3a間の導通性が向上する。
【0014】
【発明の効果】
以上説明したように本発明によれば、フラット回路体と配線材を電気的に接続する際に、接続部品数および作業工程数が減少してコストが低減し、また、接続部が小型化するという優れた効果がある。
【図面の簡単な説明】
【図1】(a)〜(d)はそれぞれ、本発明に係るフラット回路体と配線材の接続構造の一実施形態の作製工程の説明図である。
【図2】本発明の他の実施形態におけるFPCの電気的接続部の斜視図である。
【符号の説明】
1        FPC
1a、3a    導体
1b       絶縁被覆
1c       フレキシブル絶縁基板
1d       穴
2        ワイヤーハーネス
3        電線
4        加締め部品
4a       先端部
5        絶縁シート
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a connection structure between a flat circuit body and a wiring member.
[0002]
[Prior art]
Conventionally, electrical connections between flat circuit bodies such as flexible flat cables and flexible printed circuits and wiring materials such as wire harnesses have been made by connecting terminals of conductors on the flat circuit bodies and terminals of wiring materials, connecting terminals and connectors, etc. Are performed by attaching these connection parts and electrically connecting these connection parts.
In some cases, the connection terminal attached to the terminal of the wiring member is crimped to the conductor of the flat circuit member to electrically connect the wiring member to the flat circuit member (for example, see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-2001-210411 (paragraphs (0013) to (0021), FIGS. 1 to 5)
[0004]
[Problems to be solved by the invention]
The above-described electrical connection between the flat circuit body and the wiring member has the following problems. That is,
1) In the case where connection is performed by attaching a connection component to each of the flat circuit body and the wiring member, two types of connection components are required, and the number of connection component attachment processes is two, which causes an increase in cost. .
Further, when a relatively large connector provided with a housing for accommodating the terminal is used as the connection component, the electrical connection between the flat circuit body and the wiring member requires at least the volume of the connector and becomes large.
2) Even when the connection terminal attached to the terminal of the wiring material is directly crimped to the conductor of the flat circuit body, a step of attaching the connection terminal to one type of connection component and the wiring material is required, and there is a limit in cost reduction.
[0005]
[Means for Solving the Problems]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the invention according to claim 1 is that the conductor of the flat circuit body and the conductor of the wiring material are crimped by crimping parts and press-contact to electrically connect. And a connection structure between the flat circuit body and the wiring member.
According to a second aspect of the present invention, in the first aspect of the present invention, the caulked component is made of a conductive metal.
Further, the invention according to claim 3 is characterized in that, in the invention according to claim 1 or 2, a conductive adhesive is attached to a press-contact portion between the conductor of the flat circuit body and the conductor of the wiring member. .
[0006]
According to the first aspect of the present invention, the conductor of the flat circuit body and the conductor of the wiring member can be electrically connected to each other by press-contacting the conductor of the flat circuit body by using one kind of crimping component. It is not necessary to attach to the conductor of the circuit body or the conductor of the wiring material in advance. Therefore, only one kind of connecting parts is required at the minimum, and an attaching step of attaching the connecting parts to the conductor in advance is unnecessary, so that the cost is reduced as compared with the conventional case.
In addition, since the caulking component can be made smaller than a connection component such as a connector, the electrical connection between the flat circuit body and the wiring member can be made smaller than before.
[0007]
Further, when the caulking component is made of a conductive metal as in claim 2, it is preferable in terms of electrical conduction between the conductor of the flat circuit body and the conductor of the wiring member. It is more preferable from the viewpoint of electrical continuity that a conductive adhesive is adhered to the press-contact portion between the conductor of FIG.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIGS. 1A to 1D are explanatory views of a process for manufacturing a connection structure between a flat circuit body and a wiring member according to the present invention.
[0009]
As shown in FIG. 1A, this embodiment includes a flexible printed circuit (FPC) 1 that is a flat circuit body, a wire harness 2 that is a wiring member, and a caulking component 4, and a conductor 1a of the FPC 1. And a conductor 3 a of an electric wire 3 constituting the wire harness 2 is electrically connected by a caulking part 4.
The caulking component 4 is made of a conductive metal plate, is bent in a U-shape, and a pair of opposed end portions 4a are narrow and sharply pointed.
[0010]
The manufacturing process of the connection structure between the FPC 1 and the wire harness 2 is as follows. That is,
1) First, as shown in FIG. 1A, the insulating coating 1b of the FPC 1 is partially peeled off to expose required portions (ends in this case) of the five conductors 1a. In addition, the conductors 3a at the ends of the five electric wires 3 constituting the wire harness 2 are exposed.
2) Next, as shown in FIG. 1B, the exposed conductors 3a of the five electric wires 3 are respectively superimposed on the five exposed conductors 1a of the FPC 1. Then, the crimped part 4 is straddled over the stacked conductors 1a, 3a, and the pair of tip portions 4a are pierced into the flexible insulating substrate 1c of the FPC 1 as shown in FIG. Then, the conductors 1a and 3a are bent in directions approaching each other and caulked. In this state, the conductors 1a and 3a are pressed and electrically connected.
3) Next, as shown in FIG. 1 (d), an insulating sheet 5 is adhered or welded to both surfaces of the electrical connection portions of the conductors 1a and 3a to secure electrical insulation.
[0011]
The present embodiment is different from the conventional example in that the conductor 3a of the electric wire 3 and the conductor 1a of the FPC 1 are crimped by one crimping part 4 to be pressed and electrically connected.
[0012]
As described above, in the present embodiment, the conductor 1a and the conductor 3a can be electrically connected by one caulking part 4, and the caulking part 4 is connected to the conductor 1a and the conductor 3a in advance. No need. Therefore, the conductor 1a and the conductor 3a can be electrically connected with a minimum number of one component and a minimum number of one process, so that the cost is reduced.
Further, since the conductor 1a and the conductor 3a are connected by the caulking part 4 which is smaller than the connector, the space occupied by the electrical connection part is smaller than that of the conventional case.
[0013]
In the above-described embodiment, the metal plate forming the caulked component 4 is preferably as conductive as possible.
As shown in FIG. 2, holes 1d are previously formed on both sides of the exposed portion of the FPC 1 to which the conductor 1a is to be connected. The fastening parts 4 can be easily attached to the FPC 1.
Further, when a conductive adhesive is applied to the press-contact portion between the conductor 1a and the conductor 3a by applying or the like, the conductivity between the conductor 1a and the conductor 3a is improved.
[0014]
【The invention's effect】
As described above, according to the present invention, when electrically connecting a flat circuit body and a wiring member, the number of connecting parts and the number of working steps are reduced, so that the cost is reduced and the connecting portion is downsized. There is an excellent effect.
[Brief description of the drawings]
FIGS. 1 (a) to 1 (d) are explanatory views of manufacturing steps of an embodiment of a connection structure between a flat circuit body and a wiring member according to the present invention.
FIG. 2 is a perspective view of an electrical connection portion of an FPC according to another embodiment of the present invention.
[Explanation of symbols]
1 FPC
1a, 3a conductor 1b insulating coating 1c flexible insulating substrate 1d hole 2 wire harness 3 electric wire 4 crimping part 4a tip 5 insulating sheet

Claims (3)

フラット回路体の導体と配線材の導体が加締め部品により加締められて圧接し、電気的に接続していることを特徴とするフラット回路体と配線材の接続構造。A connection structure between a flat circuit body and a wiring member, wherein the conductor of the flat circuit body and the conductor of the wiring member are crimped by a caulking component to be in pressure contact with and electrically connected. 前記加締め部品が導電性金属からなることを特徴とする請求項1記載のフラット回路体と配線材の接続構造。2. The connection structure between a flat circuit body and a wiring member according to claim 1, wherein the caulked component is made of a conductive metal. フラット回路体の導体と配線材の導体の圧接部に導電性接着剤を付着させたことを特徴とする請求項1または2記載のフラット回路体と配線材の接続構造。3. A connection structure between a flat circuit body and a wiring material according to claim 1, wherein a conductive adhesive is attached to a press-contact portion between the conductor of the flat circuit body and the conductor of the wiring material.
JP2002309108A 2002-10-24 2002-10-24 Connection structure of flat circuit unit and cabling material Pending JP2004146170A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002309108A JP2004146170A (en) 2002-10-24 2002-10-24 Connection structure of flat circuit unit and cabling material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002309108A JP2004146170A (en) 2002-10-24 2002-10-24 Connection structure of flat circuit unit and cabling material

Publications (1)

Publication Number Publication Date
JP2004146170A true JP2004146170A (en) 2004-05-20

Family

ID=32455023

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002309108A Pending JP2004146170A (en) 2002-10-24 2002-10-24 Connection structure of flat circuit unit and cabling material

Country Status (1)

Country Link
JP (1) JP2004146170A (en)

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